How To Fix 37521 - & contains deep structures. Unable to copy.

SAP Error Message - Details

• Message type: E = Error

• Message class: 37 - Screen Painter

• Message number: 521

• Message text: & contains deep structures. Unable to copy.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 37521 - & contains deep structures. Unable to copy. ?

  The SAP error message 37521 typically indicates an issue related to deep structures when trying to copy or manipulate data in ABAP programs or data dictionary objects. This error often arises when the system encounters difficulties in handling complex data structures that contain nested tables or deep hierarchies.
  Cause:
  
  Deep Structures: The error is primarily caused by the presence of deep structures in the data being processed. Deep structures are those that contain nested tables or structures, which can complicate data manipulation.
  Incompatible Data Types: The data types being copied may not be compatible, especially if they involve complex nested structures.
  Memory Limitations: Sometimes, the system may run into memory limitations when trying to handle large or complex data structures.
  Incorrect Field Mapping: If the field mapping between the source and target structures is not correctly defined, it can lead to this error.
  
  Solution:
  
  Simplify Structures: If possible, simplify the data structures involved. Avoid deep nesting of tables and structures.
  Check Data Types: Ensure that the data types of the source and target structures are compatible. This includes checking for any discrepancies in field lengths or types.
  Use Flat Structures: If you are working with deep structures, consider using flat structures for copying or manipulation, and then re-nesting them if necessary.
  Debugging: Use debugging tools to trace the point of failure. Check the data being processed at the time of the error to identify any anomalies.
  Memory Management: If memory limitations are suspected, consider optimizing the program to handle data in smaller chunks or increasing the memory allocation for the process.
  Review Code Logic: Review the ABAP code logic to ensure that the copying mechanism is correctly implemented, especially if using loops or complex data handling.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error. SAP frequently releases notes that address known issues.
  Documentation: Refer to the official SAP documentation for guidelines on handling deep structures and best practices for data manipulation in ABAP.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with an SAP expert or reach out to SAP support for further assistance.